FAIA – Standard Audit File for Tax (SAF-T)


FAIA – Standard Audit File for Tax (SAF-T)

Digitalization is everywhere and nowadays, well integrated into our day-to-day business lives.

Businesses operating in multiple jurisdictions are aware that compliance with tax authorities’ evolving digital requirements is not an option. Tax authorities are increasingly moving away from the traditional audit techniques of manual data processing, towards new and sophisticated e-audits. These include the semi-automated or automated submission and review of data, together with the introduction of real-time reporting, mandatory e-invoicing, or other offerings.

The Luxembourg VAT authorities are applying the OECD-recommended Standard Audit File for Tax (SAF-T). The SAF-T (also referred to as the Fichier Audit Informatisé AED or FAIA) is a standard file designed to export data from the taxpayers’ accounting or enterprise resource planning (ERP) system upon request by the VAT authorities. In addition to static data, the file can include details of transactions from the general ledger, purchase and sales ledgers, fixed assets, and inventory.

We have noticed that the VAT authorities do intensify their requests, so it has become critical for businesses to review their current accounting and IT systems to ensure that:

  • A compliant FAIA file can be provided to the VAT authorities upon request and without delays
  • The responsible parties (finance, accounting, tax, and IT units) have full knowledge, control, and confidence about the data transmitted to the Luxembourg VAT authorities via a FAIA file.

Deloitte’s professionals understand both the local and international requirements issued by the VAT authorities. Our mixed project teams composed of tax and IT subject matter experts can bridge the gap between your finance, tax, and IT teams in order to identify an appropriate solution and to assist businesses with FAIA compliance.

What we offer

In order to assist you, our clients with these complex requirements, Deloitte Luxembourg’s VAT department has developed a range of different offerings designed to meet your various needs.

Full outsourcing and testing We can assist you with the outsourced production of your FAIA file using our internally developed FAIA production tool. We collect, format, and process the data to produce a compliant FAIA XML file for your business. 

If your systems are already equipped with a FAIA-integrated production module, we can also provide assistance in testing your FAIA’s compliance with the technical specifications and to review the VAT accuracy of your accounting data based on your FAIA file. Our experts analyze the results and provide you with error reports and related recommendations.
ERP assistance We can assist you in setting up your ERP system and specifically the SAF-T/FAIA module, enabling you to produce such files from your system without the need to use an external system or to outsource this production to a third party service provider.

This assistance always includes a testing phase of the internally produced FAIA.
FAIA consulting If your IT team is in charge of the development of an in-house FAIA production module, we can assist them, on an ad-hoc advisory basis, and bring our specific expertise on particular questions, requirements, and/or tests.
PDF - 336 kb

Our FAIA experts

Raphaël Glohr
Indirect Tax VAT
+352 451 452 665

Joachim Bailly 
Indirect Tax VAT
+352 451 452 824

Cedric Tussiot 
Indirect Tax VAT - Subject Matter Expert
+352 451 452 604

Thijl Duval
Tax IT Innovation - Subject Matter Expert
+352 451 453 032

Marilyne Siniciali
Senior Manager
Indirect Tax VAT - Subject Matter Expert
+352 451 455 871


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